Preacher Curl/Triceps Extension HD-3100 The HOIST® Preacher Curl/Triceps Extension with its bi-directional arm and multiple range-of-motion adjustments allows for performance of both biceps and triceps exercises all in one machine. Multiple grip options and seven seat adjustments for varying user heights also comes standard with this machine. The HD-3100 is part of HOIST’s HD Dual Series line, offering a comprehensive solution for fitness facilities where space, budget or both are at a premium. Bi-directional arm allows performance of biceps and triceps exercises in one machine Seven seat pad adjustments for varying user heights Multiple range-of-motion adjustments for both exercises Product Length: 53.75" (137 cm) Product Width: 48.75” (124 cm) Product Height: 55.00" (140 cm) Machine Weight: Standard (HD): 476 lbs. (216 kg) Heavy Stack (HDG): 510 lbs. (231 kg) Weight Stack: Standard (HD): 190 lbs. (86 kg) Heavy Stack (HDG): 225 lbs. (102 kg) Optional 5 lbs. Weight Upgrade (RS-CAGE-NG-OPT1) Machine Weight with add-on: Standard (HD): 488 lbs. (221 kg) Heavy Stack (HDG): 522 lbs. (237 kg) Weight Stack with add-on: Standard (HD): 195 lbs. (88 kg) Heavy Stack (HDG): 230 lbs. (104 kg)