Description: The Master Lock No. 570DPF Solid Body Padlock features a 1-1/2in (38mm) wide solid aluminum body that is lightweight, durable and resists rust and corrosion. The 9/32in (7mm) diameter shackle is 15/16in (25mm) long and made of hardened steel, offering extra resistance to cutting and sawing. The 5-pin cylinder prevents picking and the dual locking ball bearings provide maximum protection against prying and hammering. This lock contains 1 standard pin and 4 spool pins. It has an open but small keyway and "dead core" (not spring loaded) due to the ball bearing mechanism.