1. Bicycle Bike Bracket Handlebar Extension Light Flashlight LED Lamp Mount Carbon Fiber Extender Aluminum Alloy Holder Space Saver (Black) (Click Link to Check Price on Amazon)
Editor's Rating : 9.8 out of 10
Size -4 inches, Double -8 inches Bike Essencial AccessoriesFits on to your bike handle bars to add extra storage space for your bike lights, GPS or phone etc.

2. Docooler® GUB 31.8MM Double Handlebar Extension Mount Carbon Fiber Extender Holder for Bike Light Bicycle Speedometer (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
Constructed of durable aluminium alloy bracket and super lightweight carbon fiber bar.For 31.8MM handlebar only.

3. KBROTECH GUB 31.8MM Double Clamp Carbon Fiber Super Long Bike Bicycle Handlebar Extender Extension Light Lamp computer phone Mount Bracket Stand Holder Space Saver (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Constructed of durable aluminium alloy bracket and super lightweight carbon fiber barSuitable for 31.8mm caliber handlebar(used giveaway spacers can fit for 25.4/22.2mm diameter handlebar)

4. VINQLIQ Bike Cycling Lightweight Carbon Fiber Handlebar Extender Extension Lamp Holder Mount with Aluminum Alloy Bracket for Bike Mounts, GPS Units, Headlights, Cameras or Smartphone Cases (Black) (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
Quick to Install - With a screwdriver, you can have the extension bracket installed within 1 minute.Lightweight and Durable- Carbon Fiber extension bar and Aluminum Alloy bracket are super light and durable, only 0.4oz weight for the extension bar and 0.8oz for the bracket.

5. BESTEAM Double Handlebar Extender Holder for Bike Mounts, Flashlights, Speedometer Extension Installation (Blue) (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
Can install on Normal size (25.4mm) bars and up to over size (31.8mm) handlebarFits on to your bike handle bars to add extra storage space for your bike lights, headlight, speedometer, GPS or smartphone etc