Comparison Profi Roller A10077 vs Profi Roller A4026

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	Profi Roller A10077	Profi Roller A4026
	from $18.15 up to $22.44 Outdated Product	from $16.12 up to $24.92 Outdated Product
all specs only differences
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Riding style	fitness (recreation)	fitness (recreation)
Size	adjustable size 31-34, 35-38, 39-42	adjustable size 31-34, 35-38, 39-42
Wheels
Wheel setup	inline	inline
Number of wheels	4	4
Wheel size	64 mm	72 mm /70mm in size 35-38, 64mm in size 31-34/
Bearing	ABEC 7	ABEC 7
Boot / frame
Boot type	soft	soft
Boot material	nylon	nylon
Frame material	aluminium	aluminium
Detachable frame
Brake
Foot fixation	buckle hook-and-loop lacing	buckle hook-and-loop lacing
Heel strap type	hook-and-loop	hook-and-loop
Color
Added to E-Catalog	august 2016	august 2016

Wheel size

The diameter of the wheels supplied with roller skates.

This parameter is usually selected by the manufacturer based on the style of riding for which the rollers are designed (see above). The general rule is this: the larger the diameter, the more “high-speed” the wheels are considered and the less sensitive they are when hitting bumps. Wheels with a diameter of about 76 – 82 mm are considered universal, these are the sizes that are found in most fitness roller skates and stunt models (see "Riding style"). In running equipment, this size can be noticeably larger — this is done to ensure a fast and smooth ride. But on the "aggressive" models, the wheels, on the contrary, are small — with this driving style, it is critical to feel all the bumps under the rollers.