Comprised of 162 pulleys, Series QPMAT10 (metric) and QPEAT10 (inch) are made from 2024-T4 or 2024-T351 aluminum alloy or AISI 1045 steel. All series offer double flange and flangeless types, with and without set screws for fastening to shafts. They fit inch shafts from 0.375–0.75 in. and metric shafts from 8–16 mm. Made from nylon covered fiberglass reinforced neoprene, series of 22 AT10 timing belts are stocked in pitch lengths from 500–4,030 mm with 50–403 teeth.