(1) Black industrial alligator clip, (1) red industrial alligator clip Features: Universal alligator clips attach to all connecting test leads; UL approved for improved safety; Jaws open to 40mm wide; Constructed with rugged rubber over molding; 2 year warranty Specifications: Maximum voltage 1000V; Maximum current 10A; Length 2.5"; Safety category rating CAT IV 600V / CAT III 1000V; Jaw size 40mm Milwaukee's Industrial Test Probes attach to 49-77-1003 industrial connecting test leads Designed to withstand up to 1000 volts and 10 amps, this set of alligator clips used along with 49-77-1003 Industrial Test Leads and 49-77-1004 Industrial Test Probes are ideal for measuring voltage, current and resistance of most electrical systems Covered by 2 year warranty.