Product Description Reviews For secure holding of 31mm Discs. Has a 3mm shank. Show More Custom Field Diameter 31mm Shank Size 3mm __uomdescrip Each Overall Rating 0.0 0 Reviews Write a Review Create a Review 31mm PSA Disc Holder - 3mm Shank Overall Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Add a Headline * Add a Review *