Deep thin wall impact sockets 1/2” (17 - 19 - 21 mm )
https://www.rtec.ws/shop/dboul-douilles-deep-thin-wall-impact-sockets-1-2-17-19-21-mm-198550
https://www.rtec.ws/web/image/product.template/198550/image_1920?unique=39dd7d0
Reference :
DBOUL-DOUILLES