The shaft: 28.5mm, the most universal diameter
The Delta runs a 28.5mm shaft, and that half-millimetre is the whole thesis of the bar. It sits right in the middle of the useful range: a touch thicker than a 28mm Olympic bar for a bit more stiffness under a heavy squat, a touch thinner than a 29mm power bar so it still feels lively in a clean. If you only ever bought one bar and refused to specialize, 28.5mm is the diameter to buy — it presses, pulls and squats without complaint. Our dimensions guide covers how diameter maps to feel.
Dual IPF and Olympic marks: rare at this price
The stand-out spec is the knurl marking. The Delta carries both the IPF (powerlifting) and Olympic (weightlifting) ring marks— two sets of reference rings on one shaft, which is unusual at its price. That matters more than it sounds: the rings are how you index your grip the same way every rep, and having both means you can set a competition bench grip and a snatch grip on the same bar without guessing. If you train the powerlifts and dabble in the Olympic lifts, this is the bar that indexes both correctly. Our knurling guide explains what the marks are and where they sit.
Bushing sleeves: the value spin
The Delta runs bushing sleeves, and for an all-rounder that’s the right call. Bushings give a smooth, moderate spin that’s more than enough for squats, presses, deadlifts and the occasional clean — you only need the free-wheeling rotation of a bearing bar if the Olympic lifts are your primary training. Choosing bushings keeps the price sensible and the maintenance low. If you clean and snatch as your main work and want faster spin, our Synergee Games review covers a bearing alternative, and the bushing vs bearing guide lays out the trade-off.
A dedicated strength brand behind it
The quieter reason we rate the Delta is REP Fitness itself. REP is a specialist strength-equipment maker with real, published spec sheets and genuine customer support — not a generic import reseller whose listing specs shift from batch to batch. On a bar you buy once and keep for a decade, that matters: a company you can reach for a replacement part or a straight answer is worth a modest premium over an anonymous import. It’s the same reason REP’s bench earns a place in our bench roundup.
Who should buy it — and who shouldn’t
Buy it if you want one bar that genuinely covers everything and you value a real brand behind it. The 28.5mm shaft and dual marks make it the natural centre of a mixed home gym, and it pairs cleanly with a power rack and a set of plates.
Look elsewhere if you fall at either extreme. If you onlysquat, bench and deadlift heavy and want the hardest grip and a dead-stiff shaft, a dedicated 29mm power bar suits you better. If you clean and snatch as your main training and want the fastest possible spin, a bearing bar is worth the premium. And if you’re on the tightest budget, the value bars in our budget roundupcost less. For the broad middle — a lifter who does a bit of everything — the Delta is the do-it-all benchmark.
Sources
- REP Fitness Delta Basic bar — manufacturer product specification (shaft diameter, sleeve type, IPF and Olympic knurl marks, plate fitment) as published on the retail listing.
- General barbell-spec principles (shaft diameter and feel, bushing vs bearing rotation, knurl marks and indexing) as covered in our methodology and linked spec guides.
