SPECIFICATIONS Material: High-strength aluminum alloy Color: Black Extended Out-Front: 70mm(2.75inch) Weight: 50g Installation tool: 2mm and 3mm hexagon wrench(included) package content:1X pre-installed Garmin mount, 1X additional Bryton mount, 1X25.4mm spacer, 1X2mm and 3mm alley key Widely Compatibility ?Fit Garmin Edge 25 Edge 130 Edge 200 ?Fit Garmin Edge 500 Edge 510 Edge 520 ? Fit Edge 800 Edge 810 Edge 820 ?Fit Garmin Edge 1000 Edge 1030 ?Fit Bryton 100, 300, 310, 330, 530, 10 and One ?Fit Gopro, SONY Sports Action Camera and niterider headlight, fly 12 ?NO NOT FIT Garmin Forerunner 310 or 910XT common Question & Answer 1.What size of Handlebar does this bicycle mount compatible for? ?Answer: It is Compatible with 31.8mm and 25.4mm Handlebar. 2. How to install on the 31.8mm Handlebar? ?Answer: Please use the 3mm alley key to Unscrew the two bolts and remove the spacer. 3. Is the mount Compatible with Bryton ? ?Answer: Yes, The mount is also compatible with bryton devices by swaping out the pre-installed Garmin locking mount, the additional mount is for Bryton. 4. Is the gopro adapter made of aluminum? ?Answer: No, The GoPro adaptor is made of High-strength plastic, It holds GoPro or cycliq fly12 very securely. 5. Safety precautions ?Answer: Check to see if the bar screw is tighten after riding a few times, suggent add locktite blue to help keep the screws in place?Hold computer securely ?:High-strength Garmin Bryton locking mount, strong hardness but not easy to grind the computer, double twist design is more stable. ?STRONG ?:The Cycling Combo Mount is made by High-strength aluminum alloy material,CNC machined,Lightweight and Durable, won't break for riding. And it's ONLY fit for 31.8mm 25.4mm handlebars. ?Camera Gopro Combo Mount?:Garmin Edge compatible mounting on top and camera mounting on the bottom, Compatible with Gopro, SONY Sports Action Camera and niterider headlight, fly 12. ?Garmin Bryton compatible?: the pre-installed Garmin mount - Compatible with Garmin Edge 25 Edge 130 Edge 200 Edge 500 Edge 510 Edge 520 Edge 800 Edge 810 Edge 820 Edge 1000 Edge 1030, the additional Bryton mount is Compatible with Bryton 100, 300, 310, 330, 530, 10 and On. ?Provide much safer visibility?: This Garmin Out-Front computer Mount Improves legibility when focusing sight on the road compared with stem mount, It is easier to view your Garmin's display while riding.Are Batteries Included: No. Compatible Devices: Cameras. Item Weight: 0.11 Pounds. Mounting Type: Handlebar Mount. Special Feature: Lightweight. Screen Size: 2.75 Inches. Vehicle Service Type: Bicycle. Brand: Shockli. Date First Available: March 14, 2019. Best Sellers Rank: #68,521 in Electronics. Customer Reviews: 4.1 out of 5 stars 117 ratings 4.1 out of 5 stars. : B07PS179VB. Manufacturer: ?Shockli. Material: ?Aluminum, Plastic. Brand Name: ?Shockli. Item Weight: ?0.11 Pounds. Package Weight: ?0.07 Kilograms. Item Package Dimensions L x W x H: ?6.7 x 2.8 x 1.1 inches.