Product Description
Milwaukee 100 ft. Bold Chalk Reel Replacement Line
Model Number: 48-22-3989
The Milwaukee 48-22-3989 is a 100 ft. Bold Replacement Line for Milwaukee 100 ft. chalk reels — the replacement line cord for Milwaukee chalk reels that use the 100 ft. Bold line specification, restoring the chalk reel to full operating condition when the original line breaks from overstress, frays from abrasion on rough concrete and aggregate surfaces, or wears out from extended professional use. Milwaukee's Bold line designation refers to the heavy-gauge cord diameter that deposits a thicker, more pronounced chalk line on work surfaces compared to standard-gauge chalk lines — the bolder, wider chalk impression is more visible at working distances on concrete slabs, rough-sawn lumber, and masonry surfaces, reads more clearly in the lower-light conditions inside partially completed structures, and maintains legibility longer under foot traffic and material handling that would quickly obscure narrower standard lines.
The 100 ft. length is a direct match to Milwaukee's 100 ft. Bold chalk reel capacity — replacing the full working length of the reel to restore its original line capacity for full-room and full-floor layout without repositioning the anchor point mid-layout. Using the correct OEM replacement line ensures the correct cord diameter for the reel's chalk reservoir geometry and tensioner specification — a line of the wrong diameter produces incorrect chalk loading per unit length, inconsistent line tension during snapping, and potentially poor line release from the chalk reservoir that affects mark quality. Milwaukee's replacement lines are high-strength braided construction for the break strength needed to survive the snap loading of regular professional chalk reel use without the line breakage that weakens standard replacement lines under hard snap conditions on long runs.
See Milwaukee's complete chalk reel accessory lineup for replacement lines in standard, bold, and extra bold weights across all compatible Milwaukee chalk reel lengths.
Features
- 100 ft. replacement for Milwaukee 100 ft. Bold chalk reels — restores full line capacity
- Bold heavy-gauge cord for thick, highly visible lines readable from distance
- High-strength braided construction for break strength under hard snap loading
- Correct diameter for Milwaukee 100 ft. Bold reel tensioner and chalk reservoir
- Available in standard, bold, and extra bold weights for all Milwaukee chalk reel lengths
Specifications
- Length: 100 ft.
- Line Type: Bold
- Compatible Reels: Milwaukee 100 ft. Bold Chalk Reels
Includes
- (1) Milwaukee 48-22-3989 100 ft. Bold Chalk Reel Replacement Line
