Check the listing for details. Dome - Power Wheelchair Joystick Knob Replacement 3D Printed. Color: Black, Condition: New. Listed at 18.00 USD. Hello and welcome to our store! This dome styled powerchair stick is modeled similarly to the Bodypoint Rubber Dome handle and is designed for patients with weak hands. It keeps the wrist neutral to minimize pain in the hands. Controlling the fingers is also an easier task when using this stick. Height: 1” (25.4mm) Width: 2.64” (67mm) Stick is designed for 1/4” shafts. Easy installation - No set screws or bolts here just friction fit like the original stick! Stick is a snug fit, yet it easily can be swapped for a different stick in just a matter of seconds! Designed and 3D printed by me with 95A TPU material, which is sturdy, flexible, and stiff enough for the task it serves for. Print is made with good wall thickness to ensure excellent longevity and durability. As with all FDM printed items there is a seam on one side of the print as well as possible small artifacts here and there. This does not affect durability or usage it’s just looks. Feel free to ask questions! Thank you for viewing my listing and have a blessed day! :D