• This is a pack of 50 - 1/4" .062-.625 grip  Huck rivets and 50 - 1/4" large flange collars
• These fit the larger holes on the cab and sleeper panels
• You must have a HUCK gun to install them and a 1/4" nose to pull them
• 1/4" Huck OEM Part MGPT-R8-10G
• 1/4" Collar OEM Part MGCW-R8U