This snaphook from ISC is a two stage snaphook that features a 2 step opening process that requires the user to squeeze the lever on the back before being able to engage the front gate. This type of hook can unintentionally open when connected to a dee ring, if placed in a specific position.

(MBS) Minimum Breaking Strength (kN)28
(MBS) Minimum Breaking Strength (lbf)6294
Gate opening gap (mm)26
Gate opening gap (inches)1
Eye diameter (mm)20
Eye diameter (inches)0.78
Nose type Keylock nose
Finish Anodised
Weight (grams)145
Weight (ounces)5.1