Lock Ring for Modular gear system 5.5mm pinions GMF55 Price : $7.50 Add to Compare Add to Wishlist Units in Stock : 3 Description This is the part that keeps the shaft in place. This version is for use with 5.5mm pinions   Reviews  Write Review  Customers who bought this product also purchased... Hex Driver for M2 Grub Screws (0.9mm) Inline offset Modular 27 tooth GM27 0 18 x 10 N22 compound (4x) PT1207N22 Slot.it Slot.it Wheels 17.3 x 9.75 short hub w17309715a Metric Screws 2.2 x 5.3mm large head (x10) SICH54b