Head for subtotal arthroplasty. 44 mm diameter. Item No. 91.44 C Head for subtotal arthroplasty. Diameter 52 mm. Item No. 91.52 K Head for subtotal arthroplasty. Diameter 48 mm. Item No. 91.48 D Head for subtotal arthroplasty. Diameter 50 mm. Item No. 91.50 D Head for subtotal arthroplasty. Diameter 50 mm. Item No. 91.50 C Head for subtotal arthroplasty. Diameter 44 mm. Item No. 91.44 D Head for subtotal arthroplasty. Diameter 52 mm. Item No. 91.52 D Head for subtotal arthroplasty. 44 mm diameter. Item No. 91.44 K