Bossweld Engineer's Chalk 75 x 10 x 10mm (50Pc) benzomatic making this self drilling screw

making this self drilling screw a fast choice for metal roofing

Available in 2 ear types (Single ear crimp) for tight access set-ups (Dual ear crimp) for more general applications

600 max RPM

Slim-profile needle-nose coupler that reaches recessed and angled grease fittings

non-ferrous and lighter steel

Bossweld Engineer's Chalk 75 x 10 x 10mm (50Pc) benzomatic making this self drilling screwEngineer's Chalk Engineer's chalk (also called soapstone) is a marking stick used by welders, boilermakers and fabricators to lay out lines on steel and other hard surfaces. Unlike regular chalk, soapstone leaves a clear, semi permanent mark that survives handling and won't burn off as quickly under welding heat. Bossweld's engineer's chalk is supplied in 75 x 10 x 10 mm sticks (50 per pack) for fabrication, engineering and general workshop marking