HKS speedloaders have been around for centuries, they quickly allow you to reload your revolver. They feature a twist knob and hold six rounds.

Features and Specifications:
Manufacturer Number: DS-A
Fits Medium Size Speedloader Case
Loads Six Shot Cartridges Into Revolver Instantly
No Cartridge Jiggle
Popular Twist Knob
Caliber .38 Special

Fits:
Colt Detective Special
Cobra
(new version*) King Cobra
Agent
Diamondback
Magnum Plus
Armscor/Rock Island Armory M206
(*Does not fit old version King Cobra see HKS SKU# MK3A)