SKIL 14-Inch Replacement Rapid Reload String Trimmer Head for SKIL String Trimmer LT4818-10 & LT1400C-11-STH4818

What It Is

This is the replacement trimmer head for SKIL’s Rapid Reload system, designed specifically for the LT4818-10 and LT1400C-11 string trimmers (and the STH4818 attachment-capable model). It lets you reload line without disassembling the head—just push the spool in and pull line through.

Fitment & Compatibility

• Exact fit for: SKIL LT4818-10, LT1400C-11, and STH4818 trimmers.
• Not universal: Will not fit other SKIL models (e.g., older LT series) or other brands without adapter modifications.
• Measure before buying: The head diameter is 14 inches (cutting swath). If your current head is smaller or larger, this will not match.
• OEM replacement: This is a genuine SKIL part (part number may vary by retailer, but it’s the stock head for those models).
• Check your trimmer’s shaft type: These models use a straight shaft with a standard 10mm x 1.25 left-hand thread. If your shaft is different, it won’t thread on.

Key Things to Know

• Line loading is tool-free: The Rapid Reload mechanism uses a push-and-pull system. No need to take the head apart, but you must use the correct line diameter (0.080” or 0.095”).
• Installation takes 2 minutes: Unscrew the old head (left-hand thread, so turn clockwise to loosen), screw on the new one. No special tools needed.
• Common gotcha: The head is pre-wound with line from the factory, but the line may be loose. Check tension before first use—if it’s slack, pull a few inches out and re-seat the line in the notch.
• Durability: Plastic housing holds up well for residential use, but hitting rocks or concrete repeatedly can crack the spool retainer. Keep a spare spool handy.

Should You Buy It

Buy this if you own one of the listed SKIL trimmers and want a direct, no-guesswork replacement that keeps the Rapid Reload convenience. It’s the right choice for homeowners who value quick line changes and don’t want to experiment with universal heads. Skip it if you have a different SKIL model or want a bump-feed head (this is a bump-feed design, but the reload mechanism is the main feature).