Simmons Sds-1, 8, 9, 200, 400, 800 You are buying a set of FIVE brand new knob caps for Simmons stuff (just the caps, not the knobs). Fits in SDS-1, 8, 9, 200, 400, 800, Trixer, etc. Does not fit in SDS-V and SDS-7 as originals are narrower. You can mix and choose your colors from grey, blue or green. Gray ones are pretty much similar to the originals, while the blue and green ones they are more 'electric' or 'vivid' than the darker or duller originals. I recommend a full replacement of all your blue or green caps instead LOWER SHIPPING COSTS FOR MULTIPLE PURCHASES When buying more items, do NOT use the eBay checkout, it could calculate the shipping costs too high. When you are finished shopping, use eBay's "ask the seller for total" function. Mark as Favorite Seller to receive reg.