With a Speed Block for your S&W 617 10 Shot Speedloader you can pre stage your rounds for some fast and fun shooting. A simple push down on the Speedloader clicks in 10 rounds in less than 1 second.... transfer them to the cylinder.... push again and click your 10 empty chambers are full. The average person with a little practice can be reloading their revolver in less than 5 seconds. The Speed Block speed block holds 100 rounds of 22 Long Rifle. Fits the 617 10 shot speed loader, load up close the case toss it in the range bag no more spills. This is a great why to keep everything nice and neat and ready to go when you get to your favorite shooting hole. New Combo now includes the block and the case. Get more enjoyment out of your SpeedBeez 617 10 shot speed loader and save money buy the combo. Speed Block and case both included. Get it all with one click. Now your ready for Loads of Fun!