SHIMANO - 7-Speed - HYPERGLIDE - MTB Cassette Sprocket The HG41-7 offers SHIMANO&';s HYPERGLIDE shifting across its 7-speed range. It is compatible with both IG and HG chains. FEATURES - HYPERGLIDE technology - Gear combination: 11-28T PRODUCT SPECIFICATIONS - MODEL NO CS-HG41-7 - SERIES SHIMANO - Combination 11-13-15-18-21-24-28T (ac) - Combination name (Group name) 11-28T (ac) - Type HG - Compatible chain IG/HG - Rear speeds 7 - Aluminum gear_QTY (pcs) 0 - HG spline (MTB 7-speed) - Steel gear_QTY (pcs) 7 - Titanium gear_QTY (pcs) 0