The 1" STANDARD Quick Fit Bit by Techniglass is a revolutionary replacement sleeve designed for stained glass grinders. With its innovative tool-free design, swapping out grinding bits has never been faster or easier. Just flip the lever to change the grit or replace the bit—no hex keys, no hassle, and no grinder freeze-ups. The durable diamond-coated 100/120 grit surface delivers consistent performance for everyday grinding needs.