Bearing No. 20 specifications: R7 (5×8×2.5)
Bearing No. 41 specifications: R24 (4×7×2)
Dimensions of bearing No. 57: 7x14x3.5
Dimensions of bearing No. 60: 5x9x2.5
Dimensions of bearing No. 80: 7x13x3
Bearing No. 76 specifications: R5 (4 × 7 × 2.5)
Dimensions of bearing No. 80: 7x13x3
The plastic bushings on either side of the handle can be replaced with ball bearings R5 (4 × 7 × 2.5)
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