Dumbbells

The dumbbell thread

= Pro-Style =
 * Standard Dumbbell Handles (SDH) (contoured or straight) with permanently tightened bolts, end caps, and pancake plates (10lbs, 7.5lbs, 5lbs).
 * Available in 1.5" thick handles for comfort: 38mm handles
 * Some plates may be coated in rubber or urethane.
 * Article: What makes a good fixed dumbbell - Ivanko

= Hex/12 Sided/Roundhead =
 * Some have a contoured handle, some are rubber or urethane coated.
 * Some vary the handle diameter for comfort
 * Troy TSD-R: 30mm(3 - 50lbs), 32mm(55 - 70lbs) 34mm(75 - 125lbs)
 * Rep Fitness: 28mm(5 - 15lbs), 34mm(20lbs+)
 * Approx. 5" grip area.
 * Threads:
 * Roundheads 1, Roundheads 2
 * "IVANKO" IVK-400 are Impex
 * Hex dumbbell construction question

= Spinlock =
 * Spinlock handles with standard plates (1" hole, usually "pancake" (7/8" thick, 8" tall) plates). Come in various lengths.
 * 14"-24" handles: $25-$70
 * Big boy 24" handles: $240
 * YouTube: How to tighten

= Smartlock =
 * Fits standard plates (1" hole)
 * Available in steel or plastic
 * Handles don't stick out past the plates!
 * they don't hit thighs when curling
 * they don't prevent resting dumbbells on knees when pressing
 * Discontinued? Patent US5346449

= Dosho Bells =
 * Clam-Shell dumbbell system. ($250+$60)
 * 5-45 lbs in 5 lbs increments
 * Available add-on ($79+26) increases maximum weight to 70 lbs

= Cuscus Adjustable Dumbbell =
 * This set can be adjusted from 27.55-95 lbs ($200/each)
 * Original: Alibaba source
 * Dumbbell adjustments in kg: 12.5-14.95-17.4-19.85-22.3-24.75-27.2-29.65-32.1-34.55-37-39.45-42(95lbs)
 * Also available as barbell: 18.5-20.95-23.4-25.85-28.3-30.75-33.2-35.65-38.1-40.55-43-45.45-48(108lbs)

= Other =
 * Many other types of adjustable dumbbells are on the market, but none are highly regarded.
 * Thread: Equipment FAILs
 * YouTube: Adjustable Dumbbells Reviewed | WARNING!