UNBRANDED AMERICAN / ASHTABULA BOTTOM BRACKET BEARING SET NEW / MSRP $14.99 / SHIPS IN 24HRS SPECIFICATIONS: Unbranded Type: American / Ashtabula For American / Ashtabula bottom bracket shells found on inexpensive bikes Generally for 1 piece cranks (a bent piece of metal forming both crank arms and spindle that goes through the frame) Bearings: Serviceable loose ball / cone Weight: 290 grams Fits 51.5mm / 2.0″ (approximately) inner diameter shells Condition: New, not in retail packaging