Stanley Brick Punch 10mm x 140mm (3/8in x 5.1/2in) STA418236 Pin punch Quality chrome vanadium steel increased strength and durability for retained accuracy when marking out centre lines , hole locations and pilot drill starting points. Quenched and tempered to precise specifications.Size: 140 x 10mm (5 1/2in x 3/8 in). STA418236