These Mini stalk turn signals install using an 10 MM mounting stud. Their small size allows for a variety of mounting possibilities. They use 15 High Power LED's and definitely do not compromise on brightness, in fact they are very bright and easy to see even on Sunny Days.
As an added touch these Turn signals have an Amber Window on the Tip and an LED mounted to illuminate the back of the signal also.
They also feature rubber mounted studs so they don’t break easily when you accidentally knock them into something.

Stats:

One Pair of Clear Lenses Black Base, Amber LED's Short Stalk Turn Signals

Wiring: Two Wire, 12 Volt Systems

Bulb: 15 Extra Bright Amber LED's, 12V 1W

Install: Universal Signal, will fit many different bikes, installation will vary, may require modification.

Dimensions: Stud: 5/8" Long, Thread is Metric 10mm
Lens: 1 7/8" Long, 1" Wide 1" Deep
Stalk: 1" Long (Without Stud) 3/4" Round

We Recommend Resistors with this item. All LED Lights draw less current than Conventional Bulbs, therefore LED's may cause your lights to flash faster than normal. The use of a resistor brings the flashing back down to normal speed.