TRU Ball Knurled Thumb Pin - Offset Large 5/8'' TRU Ball Knurled Thumb Pin - Offset Large 5/8'' $25.00 Add Review Ask Question Product Description Reviews (0) Questions Large-sized TRU Ball thumb pin designed for use with TRU Ball releases Currently there are no reviews for this product. Currently there are no questions for this product. Similar Products Junxing Thumb release $35.00 View... TRU Ball Fang 3 Thumb Release $200.00 View... Scott Silverhorn $135.00 View... Scott Rhino XT Wrist Release $130.00 View...