Workpieces with straight edges, shoulders, grooves, studs, dowels, centre points and scribed lines can all be quickly and accurately located with this handy tool. Made of tool steel, hardened, ground and lapped.Select Option Double End Body Diameter 0.500in Contact Diameter 0.2inDouble End Body Diameter 10mm Contact Diameter 6mmSingle End Body Diameter 0.375in Contact Diameter 0.2inSingle End Body Diameter 10mm Contact Diameter 6mm Add to Basket Quantity