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Item	Contra‑Angle Handpiece	Straight Handpiece	Air Motor 2‑Hole	Air Motor 4‑Hole
Gear Ratio	1:1	1:1	1:1	1:1
Max Speed	25,000 RPM	40,000 RPM	25,000 RPM	25,000 RPM
Connector	‑	Universal E‑Type Interface	Universal E‑Type Interface	Universal E‑Type Interface
Bur‑locking System	Push‑Button Chuck	‑	‑	‑
Applicable Bur Size	Φ2.35 mm / 0.0925 inch	Φ2.35 mm / 0.0925 inch	‑	‑
Hole Quantity	‑	‑	2 Holes	4 Holes
Water‑spray System	External Water Channel	External Water Channel	External Water Channel	External Water Channel
Noise Level	≤65 dB	≤65 dB	≤65 dB	≤65 dB
Body Length	88 mm / 3.46 inch	84 mm / 3.31 inch	78 mm / 3.07 inch	78 mm / 3.07 inch