Master Lock 6830 The Master Lock No. 6830 ProSeries® Solid Body Padlock features a 1-9/16in (40mm) wide solid brass body to provide extra resistance in caustic, corrosive environments and a 1-1/16in (27mm) tall, 1/4in (6mm) diameter hardened boron alloy shackle for superior cut resistance. Designed for commercial/industrial applications, a dual ball locking mechanism resists pulling and prying and a high security, rekeyable 5-pin cylinder with spool pins is virtually impossible to pick. Model # 6830 Body Width 1-9/16in (40mm) Shackle Length 1-1/16in (27mm) Shackle Width 25/32in (20mm) Shackle Diameter 1/4in (6mm) Key Options Keyed Different, Keyed Alike (KA), Master Keyed (MK), Keyed Alike Master Keyed (KAMK) Click HERE for additional key information. Color Options Brass - 6830, 6830KA, 6830MK, 6830KAMK ProSeries® Padlocks are designed for Commercial/Industrial applications 1-9/16in (40mm) wide solid brass body provides extra resistance in caustic, corrosive environments 1-1/16in (27mm) tall, 1/4in (6mm) diameter hardened boron alloy shackle for superior cut resistance Dual ball locking mechanism resists pulling and prying High security, rekeyable 5-pin cylinder with spool pins is virtually impossible to pick BEST USED FOR: SEVERE USE Marine & Offshore Security Security Gates & Fences