Handlebar grip for 22.2mm outer diameter handlebars. Designed for flexible material like ninjaflex. Large size to reduce pressure on palm and fingers. Ribbed for increased grip. Recommended to print with a flexible material. The inner diameter of the grip is 22.2mm in the 3D model but most printers will size the ID a bitt small. This should work to your advantage as the grip will stretch a small amount while installing onto the handlebar for retention. I printed with 2mm wall thickness and 10% infill for good shell strength with a comfortable squishiness to absorb shock while riding over rough terrain. You can add wall thickness and infill in your print settings to get the shell strength and comfort you want. This design is sturdy enough for my own casual use but your safety while using this part is your own responsibility. If the grip feels loose or your printer doesn't have good enough layer adhesion to create a strong part then don't use a printed grip on your bike.