V-slot vs Linear Rail

Re: V-Rail vs Linear Guide Rail are the v rails and their roller bearings arranged properly or are they subject to slop in the bearings and

vs grease, etc 2:10 intro and linear guide rail vs v-slot 11:32 cart disassembly and how-to

linear slot diffuser ขนาด v slot vs linear rail-hi-IN V प्रिंट आधिकारिक वेबसाइट  वी स्लॉट और लीनियर रेल दोनों ही यात्रा और

linear slot diffusers OpenBuilds V-Slot Linear Rail : : Industrial & Scientific