System Hands –Voluntary Opening
These Otto Bock System Hands are suitable for all cable-activated prostheses. They open by pulling the cable (active) and close under spring tension. In closed position, the hands lock automatically (one pull).
With steel cable through the palm of the hand (inner pull). Threaded stud and system inner hand.
Material no. | Side | Size | Threaded Stud | Inner Hand | Weight |
8K21=L71/4 | Left | 7 1/4 | 1/2"–20 | 8x14 | 300g |
8K21=L71/4 | Right | 7 1/4 | 1/2"–20 | 8x14 | 300g |
8K21=L73/4 | Left | 7 3/4 | 1/2"–20 | 8x14 | 330g |
8K21=R73/4 | Right | 7 3/4 | 1/2"–20 | 8x14 | 330g |
8K21=L8 | Left | 8 | 1/2"–20 | 8x14 | 340g |
8K21=R8 | Right | 8 | 1/2"–20 | 8x14 | 340g |
10Y29=R2
Perlon cable to replace steel cable.
System Hand – Voluntary Opening
With steel cable through the back of the hand (outer pull). Threaded stud and system inner hand.
Material no. | Side | Size | Threaded Stud | Inner Hand | Weight |
8K23=L63/4 | Left | 6 3/4 | 1/2"–20 | 8x14 | ca. 215 g |
8K23=R63/4 | Right | 6 3/4 | 1/2"–20 | 8x14 | ca. 215 g |
8K23=L71/4 | Left | 7 3/4 | 1/2"–20 | 8x14 | ca. 300 g |
8K23=R71/4 | Right | 7 3/4 | 1/2"–20 | 8x14 | ca. 300 g |
8K23=L73/4 | Left | 7 3/4 | 1/2"–20 | 8x14 | ca. 330 g |
8K23=R73/4 | Right | 7 3/4 | 1/2"–20 | 8x14 | ca. 330 g |
8K23=L8 | Left | 8 | 1/2"–20 | 8x14 | ca. 340 g |
8K23=R8 | Right | 8 | 1/2"–20 | 8x14 | ca. 340 g |





