Turn your gripper into a thumb crushing pinching machine. v2 Update - https://www.youtube.com/watch?v=rKExtaHO-kw Notches removed from front base plate Increased bevel on inner join (allowing removal of notches) Screw size increased by 0.3mm to allow for tigher fit on longer term use Additional screw position added Screw position changed to sides Slide the attachments on, tighten the screws, and start isolating your thumbs for serious pinch strength. Instant setup: Slot on, tighten, lift. Targeted training: Isolates the thumbs to build powerful pinch strength. Universal fit: Designed for hand grippers with a handle/spring width up to 20 mm. Slide each attachment onto the gripper. Tighten the screws until snug (no need to overtighten). Pinch and train, start light, progress steadily. Fits most standard hand grippers up to 20mm maximum width. Please note images should be used for reference only, filament colour may slightly vary. Come as a pair - A Hand Gripper is not included with these attachments.