SPECIFICATIONS (mm) MODEL NO. d4 h3 d1 h1 SINGLE FORK 20-A 18.8±0.2 3.5±0.25 12.2±0.1 15.0±0.2 DOBULE FOCKS 20-A 18.8±0.2 3.5±0.25 13.2±0.1 13.8±0.2 13-A 12.5±0.2 2.0±0.25 7.75±0.1 10.0±0.3 TRIBLE FOCKS 20-A 18.8±0.2 3.5±0.25 13.2±0.1 15.8±0.3 32-A 30.2±0.2 4.2±0.3 23.6±0.2 22.0±0.4 FOUR FOCKS 20-A 18.8±0.2 3.5±0.25 13.4±0.1 14.8±0.3 20-A1 18.8±0.2 3.5±0.25 13.4±0.1 14.8±0.3 20-A2 18.8±0.2 3.5±0.25 13.2±0.1 11.5±0.3 13-A 12.5±0.2 2.0±0.25 8.0±0.1 11.5±0.3 13-A1 12.5±0.2 2.0±0.25 8.0±0.1 10.0±0.3