SMALL EAR PLUGS - Designed about 20% smaller than Mack's standard-sized foam earplugs to provide ultimate comfort for small or sensitive ear canals. Softer, smaller, silky smooth and contoured.
HEARING PROTECTION - With a high Noise Reduction Rating (NRR) of 30 decibels, these noise blocking earplugs are great for sleeping, snoring, studying, power tools, shooting sports, travel, loud events, etc.
ULTIMATE COMFORT - Molded with super low-pressure, skinned and tapered, slow release foam, providing unmatched user comfort and hygiene. Unique hollow and flared design maximizes comfort, especially for a side sleeper..
#1 BRAND FOR SNORING, SLEEPING AND TO PROTECT HEARING - Mack’s is the #1 doctor recommended brand of foam earplugs to protect hearing and to get a good night’s sleep when sleeping with a snoring spouse.
SATISFACTION GUARANTEED - Trust Mack’s, the brand that doctors trust, since 1962..
1,750lbs capacity per each spring, for standard 3,500lbs trailer axle,Eye to Eye length: 25-1/4 inch, Free open: 3 inch, width of leaf: 1-3/4 inch, 4 leaves, 9/16 inch bushing dia, nylon bushings installed.
It will replace SW4B / 72-42 / LIB-401-DE / UNA212 / PR4B / 124903 / 9150014 / 93184 (different SKU# but same spring).
Include Complete single trailer axle hanger kit for 1-3/4" leaf springs, Kit include: 2 x 3" tall hangers, 2 x 2.1" tall hangers, 4 x shackle straps (eye to eye 3.09"), 6 x 9/16"-18 x 3" long shackle bolts and locknuts.
LIBRA has been supplying US OEM trailer industry for over 16 years, reliable and quality parts trusted by major trailer & trailer axle manufacturers..