1.A New Telescopic Sidewall Design Is Added.The Inside Of The Sidewall Is Flush With The Bottom Of The Camera, Which Acts As A Limiter. 2.Even When Used With A 1/4inch Screw, The Camera Can Be Firmly Secured To Prevent Loosening. 3.Suitable For Upper Quick Release Plate 4.Applicable To For 4 Pro/ 3 Pro/ 3/ 2 Accessories 5.Convenient To Carry And Easy To Use Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Dimensions: Approximately 55mm Long, 38mm Wide, 16.3mm High Adapted Products for 4 Pro for 4 for 3 Pro for 3 for 2 Colour:As Shown Material:ABS Package Contents: 1x Half-Moon Fixing Screw (1/4inch-20) 1x Fixing Screw (1/4inch-20) 1x Upper Quick Release Plate Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.