Overview Product Description This is a pack of twenty (20) black O-rings with a 9/32" OD for use with all Micro Jig GRR-Ripper 3D Pushblock models to prevent screws from coming loose. Product Videos Custom Field Product Reviews Write a Review Write a Review × VMTW Micro Jig GR-H3K 9/32" OD Black O-Rings for GRR-Ripper Legs (20-Pack) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *