Includes (1) 690161005 Piston RingNew, Bulk PackedGenuine OEM Replacement Part # 690161005Consult owners manual for proper part number identification and proper installationPlease refer to list for compatibilityCompatible with the following: Ryobi: CS30, RY30000B, SS30, SS30, RY30002B, BC30, BC30, RY30004B, RY30004D, RY30020A, CS30, RY30040A, RY30040B, SS30, RY30060A, RY30060B, BC30, RY30120, RY30140, BC30, RY30220, RY30220A, RY30220B, RY30240, RY30240B, RY30260, RY30260B, RY30524, RY30544, RY30564, RY52001, RY52002, RY52002A, RY52003, RY52003A, RY52004, RY52004A, RY52014 TP30, RY52502, RY52903, RY30020, RY30060, SS30, RY30023, RY30063, SS30, RY30020B, RY30963, RY30542, RY30943, RY30923, RY30562, RY30522, Homelite: Homelite: BC3000, BC730SBR, D630CD, D730CDV, D830CB, D830CB, D830CD, D830SB, D830SB, D830SBA, D830SD, UT-20593-A GST, GST18, GST18, UT15084B GSTBC, UT15084C GSTBC, HBC18, HBC18, HBC18, HBC18, HBC28, HBC28, HBC30, HBC30, HBC30, HBC30, HBC30, HBC30B, HBC30B, HBC30B, HBC30Bi, HBC30i, HGT: HGT, HLT15, HLT15, HLT15, HLT15, HLT15, HLT16, HLT16, HLT16, HLT17C, HLT17C, HLT17C, HLT17C, HLT18, HLT18, HLT18, HB25150V, UT-08057-A: UT-08120-B, UT-20601-A, HB180, SX135, UT-20594-B, UT08934B, UT08934D, UT-08079, UT-08074, UT-08074-A, UT-08074-B, UT-08077, ST145, ST145, UT10514, UT10516, UT-