Oregon 55-988, Clamshell 2 Line Bump-Feed Trimmer Head Semi-Automatic / 55-988Bolts Included: 7Mm X 1.0 Lhm8Mm X 1.25 Lhm10Mm X 125 Lhf Fits Models:, Husqvarna 24R (Up To Ser #603702), Maruyama Bc220Dl, Bc221Dlred Max Bc220Dl, Bc221Dl, Bc300Dl,Bc2300Dl, Bk235Fl, Bk345Fl,Bk435Fl, Bk530Dl, Bc17, Bc23, Bc32, Bc240Dl, Shindaiwa T195, T220, T222, T230,T230S, T242, T242X, T2510, T2510X, Homelite Hk-24 (To 1/1/'86), Hk30 (After 1/1/86), Hk33 (To 1/1/86)St80/100/120/160/180/200/210/360/ 385 (Euro), Husqvarna (Up To 86)16R, 22R, 24R, 25Rljonsered Bp40, Bp40Combi, Bp2040, Br400,Br420, Br450, Br460, Br480, Br500,Tiger 40, Gt21L, Gt22L, Gt24L,Gr26Combi, Gr26D, Gr26L, Gr32L,Gr2026Cl, Gr2026D, Lr200, Lr220,Lr260, Lr320, Lr400, Lr420, Lr450, Lr460, Maruyama Bc184, Bc184C, Bc200, Bc201,Bc230, Bc241, Bc260, Bc260H,Bc310, Bc320, Bc320H, Bc326,Bc340Dl, Bc402, Bc420H, Bc500,Bc500H, Bc2300, Bc2321, Bc2600,Bc3021, Bc3200, Bc4200H, Bcl2550,Bcgx22, Bcgx31, Bcl2250,Mcculloch Mac 22/23/30A, Supermac 30Av,Ms33, Delta, 38Av, Ms40, Bp30Av,Td2400/3300/4000Red Max Bc260Dl, Bc261Dl, Bc262Dl,Bc340Dl, Bc341Dl, Bc342Dl,Bc2600Dl, Bc430Dwm,Bc440Dwm, Bk346Fl, Bk245Flk,Bk436Fl, Bc245A, Bc260Dm/Dmu,Bc340Dwm/Fw, Bc431Dwm,Bcd20, Bcf01, Bc2601S, Bc3400Dw,Bc4400Dw, Bcx2600Ds, Bcz2500S/ Su/Sw, Shindaiwa T260, T261, T261B/Xr/Xb, T272,T272X, T282, T282X, T300, T3410, T3410Xstihl Fs50, Fs51, Fs55, Fs60, Fs61, Fs65,Fs80, Fs83, Fs85, Fs86, Fs90, Fs91, Fs96A Favorite Among Many Major Oem'S, This Trimmer Head Featuressingle Or Dual Line Indexing With Equal Line Extension.Recommended for Trimmers Under 28Ccclamshell Version Of Oregon 55-284