These range of knobs have been thoroughly tried and tested over many years. They have stainless steel shafts and are fixed in place with a grub screw and Allen key (supplied).The Mushroom Knob is a round knob equivalent to the balls typically found on wheelchair controllers. However it has an additional rib as a tactile direction indicator. Its diameter is 3.5 cm.The Cow Horn Bar has “horns” at the ends to help stop hands slipping off in case the user is unable to grip securely. Its length is 9 cm (between horns).The T-Bar is another familiar format but the MERU version has smooth, rounded contours and is particularly comfortable to grasp. Its length is 10 cm.FeaturesAll knobs are 30 mm high (plus horns on the Cow Horn bar)Ultimarc Ultrastik has M6 threaded shaftA 2mm Allen key (supplied) is required to secure knobs.
