Metric
Chrome vanadium steel (except * which are made from drop forged carbon steel) with a satin finish body and highly polished heads, with a 15° offset.
DIN 3110: 4 x 5mm to 32 x 36mm, 1/4” x 5/16” to 1 5/16” x 1 5/8” AF.
ASME B107.39: 36 x 41mm to 46 x 50mm, 1 7/16” x 1 5/8” to 1 13/16” x 2” AF.
DIN 3110 & BS192:1982: 1/8” x 3/16” to 1” x 1 1/8” Whitworth.