Arcasd 1/2''x28 Thread Protector andIncludes Free Steel 1/2x28 Crush Washer
Thread protector for all 1/2" x 28 threaded Manganese Phosphate matte finish Protect threads Weight: 18.5g Come With Free 1/2'' Crush Washer(5PCS) KNURLED GRIP - Easily Hand Tightened With The Knurled Grip On The Gun Barrels. No Tools Needed
Product description knurled for quick, tight and tooless use CNC Machined High Quality Steel Heat Treated Solid Machined Construction Black Oxide Finish 1/2"x28 Pitch Threads As different computers display colors differently, the color of the actual item may vary slightly from the above images, thanks for your understanding!
https://m.media-amazon.com/images/I/61Jf2ESnOPS._AC_SL1500_.jpg https://m.media-amazon.com/images/I/71LS92GrjSS._AC_SL1500_.jpg https://m.media-amazon.com/images/I/71MIQd83uwS._AC_SL1500_.jpg
https://m.media-amazon.com/images/I/31DRFZpdm5S._AC_.jpg https://m.media-amazon.com/images/I/31k82Kk3+vS._AC_.jpg https://m.media-amazon.com/images/I/31dDZ0aFmyS._AC_.jpg
https://m.media-amazon.com/images/I/31DRFZpdm5S._AC_US40_.jpg https://m.media-amazon.com/images/I/31k82Kk3+vS._AC_US40_.jpg https://m.media-amazon.com/images/I/31dDZ0aFmyS._AC_US40_.jpg
MAIN PT01 PT02
Thread Protector for 1/2x28 Thread  Steel 
https://www.amazon.com/vdp/01dafb016a8c4340800c57cadb337c29?ref=dp_vse_rvc_0
Arcasd
{"Material": "Alloy Steel", "Outside Diameter": "0.5 Inches", "Washer Type": "Conical Spring", "Exterior Finish": "Phosphate, Black Oxide", "Metal Type": "Alloy Steel", "Brand": "Arcasd", "Item Weight": "18.5 Grams", "Number of Pieces": "5", "Fastener Type": "Flat Washer", "Item Package Dimensions L x W x H": "2.64 x 1.61 x 0.75 inches", "Package Weight": "0.03 Kilograms", "Brand Name": "Arcasd", "Date First Available": "April 12, 2021"}