Stan SX4 Thumb Release Heavy Metal Small Ultra-fast spring-assisted hook reduces latency from decision to release;Hook biases into the same position for consistent, repeatable shot execution;Fully adjustable finger position, thumb barrel position, travel, and tension;Custom T10 Torx hardware securely locks adjustments in place;Interchangeable 3-finger and 4-finger configurations;Built-in trainer lock for practice and training;Compatible with wrist strapstable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 2500 Product Group Code: 2500B Inactive: No Second Color: Brass