Features: and high quality Precise CNC manufacturing ensures accurate fit and easy installation Two outer diameter wrench flats for convenient installation and removal; compatible with 3/4 inch or 19mm wrenches Extended external thread length for secure connection with accessories All threads are CNC machined for stable and reliable installation Each adapter is tested with go/no-go thread gauges to ensure correct thread cut and sizing Specifications: Material: Stainless Steel Size: Approx. 5 x 7 cm (1.96 x 2.75 inches) Color: Silver Thread Size: Internal thread 1/2-28 to external thread 5/8-24 Note: 1. Please allow 1-2 cm errors due to manual measurement. Ensure you are comfortable with this before ordering. 2. Due to differences in monitor displays, the actual color of the item may vary slightly from the images. Package Includes: 1 x Thread Adapter