ST-12 Oil pressured pneumatic riveter Pull strength:1045kg Length working: 16mm Cap size:2.4, ST-12 Oil pressured pneumatic riveter Pull strength:1045kg Length working: 16mm Cap size:2.4, 3.2, 4.0, 4.8mm Air consumption: 3cfm Hydraulic piston for increased power .Ultra high speed ideal for assembly line .Easy operation in any position with one head .Front exhaust.