As Bob says...i would rather know i cant afford one rather that waste money. But all info is appreciated.Not now the Chinese have got in on the act
https://www.ebay.co.uk/itm/AIR-FED-...Protector-for-Sandblasting-Pipe-/391858596352
https://www.ebay.co.uk/p/Safety-San...for-Sandblasting/19007203870?iid=202080440601
Mine cost me £200 over 10 years ago.