The abus 00454 pneumatic lockout device blocks access to compressed air connections during maintenance it is made from fibreglass reinforced nylon that is long lasting robust and non conductive with 3 different connections it is suitable for most common compressed air couplings with 1932in outside diameter the hole in the middle can be used to attach and store the lockout device directly at the connection it can hold 1 padlock with 14in and 1 padlock with 932in shackle diameter per connection sp