60mm Reinforced 30% Glass Fibre Washers for Fixing Rigid Insulation Boards, Brown - 100PCS

Used these for fixing Celenit wood wool plasterboard to counter battens. They can span two boards and are best used with 5 x 50mm stainless screws.

not a lot to say...apart from they did not snap when put under load. I used them to keep a temporary tarpaulin on a roof. Held well. No complaints

Ideal for securing wood-wool boards.

Perfect for the job. I used these to secure celotex insulation boards onto the roof of my playhouse. Did the job perfectly without cracking the boards.

Nice to be able to use my own screws rather that the rubbish ones you typically encounter. The washers are consistently well made. Haven't found any wrong-uns.

Excellent load spreading washer using the recommended screw size of 5mm; used to affix 50mm insulation board.

Used these to fit rock wool slabs to attic roof - perfect,

Very brittle