Easy To Set- Trap Sets With One Hand.Easy To Release- Lever Opens Trap Door And Animal Is Set Free.Safe- Set And Release Mechanism Is Located At The Top Of Thetrap Limiting Interactiong With The Animal.No Assembly Required.Proven Design- Tested By Professional Trappers.Cage Dimensions- 17 Inch X 7 Inch X 7 Inch. For Squirrel Size Animals.