The Klip-Lok Flip Top Box from GRAYS are very durable maggot boxes. They are identical to the Klip-Lok Box but have an extra small window to quickly take something out of your box. They are lord and master in all areas. Very strong and easy to lock, even very easy to close with 3 closed mounting plates! Very easy to open and close by means of the klip lok system. Available in 2 sizes.