Powerblock Sport 2.4 Adjustable Dumbells The Sport 2.4 equals/ replaces 8 pairs of dumbells or 98 kgs of free weights. Weight range is 1-11 kgs per hand in 1kg increments. Increments achieved are; 1, 3, 4, 5, 7, 8, 10, & 11 kgs per h&. The Sport 2.4 cannot be further expanded. The Sport Series is the third generation of Power Blocks new in June of 2008. The Sport Series consists of 4 models of Power Blocks with unique differences in both form & function. As far as form goes, the dramatic changes would be the grey colour of the steel weight plates vs. the black weight plates of othe Power Blocks models & the rounded shaped top of the weight plates offering a stylish look. As far as function differences, the Sport Series has tapered handles, double tethered selector pins (not on the sport 2.4), the wrist supports are of a more open design offering a larger handle cavity & the dial locks are recessed into the handle. Gymworld Telephone Hours: 9am to 5pm Mon-Friday, 10am-4pm Saturday. Noon-4pm Sunday.