Previous Product Adjustment Knob Lock System Upgrade Kit$24.95 Adjustment Knob Lock System Upgrade Kit quantity — OR — Add to cart SKU: 70-WJDADJL Category: Wonder Junior Parts Tag: Wonder Junior Description Description Adjustment Knob Lock System Upgrade Kit for the Wonder Junior hand grain mill. Related products Quick View Quick View Wonder Junior PartsWonder Jr Masa/Nut Butter Auger $59.95 Add to cart Quick View Quick View Wonder Junior PartsStone Heads with Bolts $89.95 Add to cart Quick View Quick View Wonder Junior Motorizing Options16 AMP Motorizing Switch (for motorizing Wonder Junior) $20.00 Add to cart