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Product Details

Injects a high pressure blast of water into the waste pipe.

Technical Specification
Brand Silverline
Manufacture ID MS138
Type Accessories
Delivery details

Covid-19 Update

  • Free Next Business Day delivery for orders over £25 to home and site is available for orders placed before 5pm
  • Saturday and Sunday delivery is now available for orders placed before 4pm on Friday for Saturday delivery and 4pm Saturday for Sunday delivery, see here for details
  • We have temporarily suspended our Pre-12 delivery service
  • Once your order has been dispatched you will receive an invoice email with the courier details and your tracking number
  • Alternatively go to MyAccount, click on your Order History, click on the TRACK icon to link through to the carrier website and the tracking details for your delivery
  • If your order contains more than one item it may be split into two deliveries as we manage volume across our network
  • Due to carrier constraints it is not currently possible to deliver age restricted items. Please use our Click & Collect service for these products
  • Delivery direct from suppliers is now available and specific delivery times will be displayed on the product page
Order Value: Under £25 Over £25 but less than £75 £75 & Over
Next Business Day Delivery (Mon-Fri) usually before 6pm £5 Free Free
Pre-12 Delivery before 12 noon Next Business Day £10 £5 £5
Remote areas standard delivery (2-4 days) £5 Free Free
Saturday Delivery order by 4pm Friday £10 £5 Free
Sunday Delivery order by 4pm Saturday £10 £5 Free

Please note items delivered by our suppliers are not available for the options above. Delivery times may vary.

More about Delivery & Returns
Click & Collect details

Covid 19 Update

Click & Collect

  • Safe contactless collection is available 7 days a week at our branches
  • Our branches are open 7am-5pm Mon-Sat and 9am-4pm Sun
  • Keeping our colleagues and customers safe and well and respecting stringent social distancing requirements is our number one priority – 2 metre rule enforced
  • Our available product range will not require more than 1 person to lift
  • Please see our guide to click and collect below

  • Please ensure that your mobile number is added so that we can text you when your order is ready to collect

Call & Collect

Due to current trading conditions we have suspended our Call & Collect service until further notice.

If you are using our Click & Collect service please note the following:
  • Order online or over the phone and collect in branch from 5 minutes later.
  • Ensure you check stock is available for collection at your chosen branch.
  • Check branch opening hours to ensure you have sufficient time to collect.
  • For items not available for same day collection, place order before 7pm Mon-Fri (4pm Sun) and you can collect Next Business Day (Mon-Fri) after 3pm.
  • If we have your mobile number, we’ll send you a text when your order is ready to collect.
Drain Blast Unblocker is rated 3.3 out of 5 by 32.
Rated 1 out of 5 by from A useless product. This product is totally useless. There were no instructions but that was only the beginning of the problems! Once filled (in the bath, as too big to fill anywhere else) the water leaked out at such a rate that it was nearly empty by the time I got it to the blocked shower!! Then, when turning it the right way up for use, the rest of the water had poured out before it was in place. Absolute waste of time and money!
Date published: 2020-05-25
Rated 5 out of 5 by from Does what it says on the tin! So easy to use. Description very clearly marked
Date published: 2020-05-02
Rated 5 out of 5 by from Doing the job Find it easy to unclog the drain of my bathroom.
Date published: 2020-04-30
Rated 5 out of 5 by from Work brilliantly with little effort I had a problem with bath water draining and this worked wonders
Date published: 2020-04-23
Rated 3 out of 5 by from not the best this is not the best unblocker but for the price you get what you pay for
Date published: 2020-03-07
Rated 1 out of 5 by from Utter Garbage Do Not Buy. Have used many of these over the years, and the rest have been ok. On using this item on an innocent blocked sink, i got a very unsatisfying power shower of sink" water on completion of my second back stroke, most of the water was jettisoned out around the handle under significant pressure, soaking me, the mirror the wall and not forgetting the floor. So there you have it ! Toolstation get the slightly better type in stock and charge us a quid more!, and we, your valued customers will be happy, Cheers.
Date published: 2020-01-24
Rated 1 out of 5 by from Rubbish Garbage. Worked for one "blast", then the seal went so water just ran straight out. No way to open to investigate a fix. At less than £3, not even worth the fuel to return it. Maybe I just got unlucky, but would not recommend.
Date published: 2020-01-21
Rated 1 out of 5 by from Worse than a bag of farts Brought on the basis of hmm might help the with my blocked sink and it's cheap. What total and utter rubbish! You have to try and fill it upside down, which is tricky enough in the sink given it's too long to fit under the tap, unfortunately as it's not water tight all the water just comes out the other end! If you do manage to find a way to fill it, stop water coming out either end, get it to the sink/plughole, cover the overflow pipe and push water out of it before it all just trickles out anyway then I assume you must be some sort of ninja. Also special shoutout for the helpful 5 start reviews that say they haven't used it yet, really helpful...
Date published: 2020-01-11
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