Check the listing for details. 31.8mm CONTROLTECH Control Tech Lynx Stem BLACK 1 1/8" 40MM 50MM MTB endur. Condition: New. Listed at 54.99 USD. LYNX 31.8 Stem Light, stiff 6061 aluminum body and faceplate are secured with tough SCM-435 steel hardware for enduro-ready strength and performance. ITEM: ATB-956 Stubby lengths – 40mm and 50mm – tuned to today’s long and slack frames. Zero rise helps keep tall 29er trail bikes manageably low at the front. Corrosion-resistant 6061 aluminum is anodised for looks that won’t fade. Long-lasting steel bolts ensure total security on the hardest trails. Popular 31.8mm clamp size fits all traditional bars. Available with black faceplates. SPECS High strength, low weight: just 139g for the 40mm option. Made For：Trail, all-mountain and enduro Material：6061 aluminum Bolts：SCM-435 steel Stack Height：41mm Rise：0º Length：40/50mm Clamp Diameter：31.8mm Weight：139g (40mm option) Color：Red/Gray